@inproceedings{KernDikta2009,
  author    = {Kern, Alexander and Dikta, Gerhard},
  title     = {Probability of damage of electrical and electronic systems due to indirect lightning flashes - investigation of data from German insurance companies},
  year      = {2009},
  abstract  = {In the presented paper data collected from the field related to damage statistics of electrical and electronic apparatus in household are reported and investigated. These damages (total number approx. 74000 cases), registered by five German insurance companies in 2005 and 2006, were adviced by customers as caused by lightning overvoltages. With the use of stochastical methods it is possible, to reasses the collected data and to distinguish between cases, which are with high probability caused by lightning overvoltages, and those, which are not. If there was an indication for a direct strike, this case was excluded, so the focus was only on indirect lightning flashes, i.e. only flashes to ground near the structure and flashes to or nearby an incoming service line were investigated. The data from the field contain the location of damaged apparatus (residence of the policy holder) and the distances of the nearest cloud-to-ground stroke to the location of the damage registered by the German lightning location network BLIDS at the date of damage. The statistical data along with some complementary numerical simulations allow to verify the correspondence of the Standards rules used for IEC 62305-2 with the field data and to define some correction needs. The results could lead to a better understanding whether a damage reported to an insurance company is really caused by indirect lightning, or not.},
  subject      = {Blitzschutz},
  language  = {en}
}
@article{WettingfeldKernKraemeretal.2009,
  author    = {Wettingfeld, J{\"u}rgen and Kern, Alexander and Kr{\"a}mer, Heinz-Josef and Thorm{\"a}hlen, Reyno},
  title     = {International anerkannte Blitzschutznormen : Ausgewogener und sicherer Schutz},
  publisher = {Fachhochschule Aachen},
  address   = {Aachen},
  year      = {2009},
  abstract  = {Die Einleitung zur Norm DIN EN 62305-3 beschreibt klar und ein - deutig: Der vorliegende Teil der IEC 62305 behandelt den Schutz von baulichen Anlagen gegen materielle Sch{\"a}den und den Schutz von Personen gegen Verletzungen durch Ber{\"u}hrungs- und Schrittspannungen. Als das wesentlichste und effektivste Mittel zum Schutz von baulichen Anlagen gegen materielle Sch{\"a}den gilt das Blitz - schutzsystem (LPS).},
  subject      = {Blitzschutz},
  language  = {de}
}
@inproceedings{KernBeierlZischank2009,
  author    = {Kern, Alexander and Beierl, Ottmar and Zischank, Wolfgang},
  title     = {Calculation of the separation distance according to IEC 62305-3: 2006-10 - Remarks for the application and simplified methods},
  year      = {2009},
  abstract  = {[Paper of the X International Symposium on Lightning Protection 9th - 13th November, 2009 - Curitiba, Brazil. 6 pages] The international standard IEC 62305-3, published in 2006, requires as an integral part of the lightning protection system (LPS) the consideration of a separation distance between the conductors of the LPS and metal and electrical installations inside the structure to be protected. IEC 62305-3 gives two different methods for this calculation: a standard, simplified approach and a more detailed approach, which differ especially regarding the treatment of the current sharing effect on the LPS conductors. Hence, different results for the separation distance are possible, leading to some discrepancies in the use of the standard. The standard approach defined in the main part (Clause 6.3) and in Annex C of the standard in some cases may lead to a severe oversizing of the required separation distance. The detailed approach described in Annex E naturally gives more correct results. However, a calculation of the current sharing amongst all parts of the air-termination and downconductor network is necessary, in many cases requiring the use of network analysis programs. In this paper simplified methods for the assessment of the current sharing are presented, which are easy to use as well as sufficiently adequate.},
  subject      = {Blitzschutz},
  language  = {de}
}
@inproceedings{BehrensFrentzelKern2009,
  author    = {Behrens, J{\"o}rg and Frentzel, Ralf and Kern, Alexander},
  title     = {Simulation der transienten Spannungsverl{\"a}ufe im Eigenbedarfsnetz eines Großkraftwerks bei einem kraftwerksnahen Blitzeinschlag in die Hochspannungs-Freileitung},
  isbn      = {978-3-8007-3197-8},
  year      = {2009},
  abstract  = {8. VDE/ABB-Blitzschutztagung, 29. - 30. Oktober 2009 in Neu-Ulm. Blitzschutztagung <8, 2009, Neu-Ulm> Berlin : VDE Verl. 2009 Großkraftwerke k{\"o}nnen durch Blitzentladungen mit potentiellen Auswirkungen auf deren Verf{\"u}gbarkeit und Sicherheit gef{\"a}hrdet werden. Ein sehr spezielles Szenario, welches aus aktuellem Anlass zu untersuchen war, betrifft den kraftwerksnahen Blitzeinschlag in die Hochspannungs-Freileitung am Netzanschluss der Anlage. Wird nun noch ein sogenannter Schirmfehler unterstellt, d.h. der direkte Blitzeinschlag erfolgt in ein Leiterseil des Hoch- bzw. H{\"o}chstspannungsnetzes und nicht in das dar{\"u}ber gespannte Erdseil, so bedeutet dies eine extreme elektromagnetische Einwirkung. Der vorliegende Beitrag befasst sich mit der Simulation eines solchen Blitzeinschlages und dessen Auswirkungen auf den Netzanschluss und die Komponenten der elektrischen Eigenbedarfsanlagen eines Kraftwerks auf den unterlagerten Spannungsebenen. Die dabei gewonnenen Erkenntnisse lassen sich ohne Einschr{\"a}nkungen auf Industrieanlagen mit Mittelspannungs-Netzanschluss und ohne eigener Stromversorgung {\"u}bertragen.},
  subject      = {Blitzschutz},
  language  = {de}
}
@article{KernKrichel2004,
  author    = {Kern, Alexander and Krichel, Frank},
  title     = {Considerations about the lightning protection system of mains independent renewable energy hybrid-systems - practical experiences},
  series = {Journal of electrostatics. 60 (2004), H. 2-4},
  journal   = {Journal of electrostatics. 60 (2004), H. 2-4},
  isbn      = {0304-3886},
  pages     = {257 -- 263},
  year      = {2004},
  language  = {en}
}
@article{KernZischankHeidleretal.1998,
  author    = {Kern, Alexander and Zischank, Wolfgang J. and Heidler, Fridolin and Wiesinger, J. [u.a.]},
  title     = {Shielding effectiveness of reinforced concrete cable ducts carrying partial lightning currents},
  series = {Conference proceedings : 14th - 18th September 1998, [Burlington Hotel, Birmingham, United Kingdom] / organised by: School of Engineering and Advanced Technology, Staffordshire University, United Kingdom},
  journal   = {Conference proceedings : 14th - 18th September 1998, [Burlington Hotel, Birmingham, United Kingdom] / organised by: School of Engineering and Advanced Technology, Staffordshire University, United Kingdom},
  address   = {Birmingham},
  year      = {1998},
  language  = {en}
}
@article{KernThomsen1994,
  author    = {Kern, Alexander and Thomsen, M.},
  title     = {Comparison of single point and equipotential bonding for I\&C systems of large-area industrial sites},
  series = {Volume of proceedings : Budapest, Hungary, September 19-23, 1994 / organized by: Technical University of Budapest},
  journal   = {Volume of proceedings : Budapest, Hungary, September 19-23, 1994 / organized by: Technical University of Budapest},
  publisher = {Techn. Univ.},
  address   = {Budapest},
  pages     = {Getr. Z{\"a}hlung [ca. 610 S.]},
  year      = {1994},
  language  = {en}
}
@article{KernDrumm1994,
  author    = {Kern, Alexander and Drumm, F.},
  title     = {Survey of the lightning threat for aircraft based on natural lightning data and fixed in the German Standard DIN VG 95371 / Part 10},
  series = {Proceedings of the 1994 International Aerospace and Ground Conference on Lightning and Static Electricity : May 14 - 27, 1994, Bundesakademie f{\"u}r Wehrverwaltung und Wehrtechnik Mannheim ; final report / [conference chairman Jan Luiken TerHaseborg]},
  journal   = {Proceedings of the 1994 International Aerospace and Ground Conference on Lightning and Static Electricity : May 14 - 27, 1994, Bundesakademie f{\"u}r Wehrverwaltung und Wehrtechnik Mannheim ; final report / [conference chairman Jan Luiken TerHaseborg]},
  publisher = {Bundesakad. f{\"u}r Wehrverwaltung und Wehrtechnik},
  address   = {Mannheim},
  pages     = {IX, 492 S : Ill., graph. Darst},
  year      = {1994},
  language  = {en}
}
@article{KernZischank1993,
  author    = {Kern, Alexander and Zischank, Wolfgang J.},
  title     = {L{\"a}ngsspannung an blitzstromdurchflossenen Schirmkabeln - Einfluß paralleler Entlastungsleitungen},
  series = {Elektrie : wissenschaftlich-technische Zeitschrift der Elektrotechnik. 47 (1993), H. 6},
  journal   = {Elektrie : wissenschaftlich-technische Zeitschrift der Elektrotechnik. 47 (1993), H. 6},
  isbn      = {0013-5399},
  year      = {1993},
  language  = {de}
}
@article{KernRothWiedmann1992,
  author    = {Kern, Alexander and Roth, J. and Wiedmann, J.},
  title     = {Comparison of the damage for various types of fibre reinforced composites due to different lightning test standards (MIL-STD 1757 A, German military VG-standard 96903)},
  series = {Proceedings of the 1992 International Aerospace and Ground Conference on Lightning and Static Electricity : October 6-8, 1992, Trump Taj Mahal, Atlantic City, NJ.},
  journal   = {Proceedings of the 1992 International Aerospace and Ground Conference on Lightning and Static Electricity : October 6-8, 1992, Trump Taj Mahal, Atlantic City, NJ.},
  publisher = {U.S. Dept. of Transportation, Federal Aviation Administration},
  address   = {[Atlantic City, N.J.]},
  pages     = {Getr. Z{\"a}hl. : Ill. + addendum},
  year      = {1992},
  language  = {en}
}